Ultrasound and Chemotherapy of Breast Cancer: Relationship Between Early Vascular Changes of the Tumor and Late Tumoral Response

Inclusion Criteria

• •Breast tumor (size equal to or greater than 3 cm.). Patients with diagnosis of benign breast tumor based on biopsy will be excluded from the study after the first ultrasound examination.
• •Neoadjuvant chemotherapy is programmed when an epithelial carcinoma is diagnosed by histology.
• •Performance status = 0, 1 or 2
• •No previous surgery or local radiotherapy